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【单选题】
引起急性胰腺炎的主要病因是A.剧烈运动B.糖尿病C.胆道疾病D.甲亢###A.
引起急性胰腺炎的主要病因是 A.剧烈运动
B.
糖尿病
C.
胆道疾病
D.
甲亢
E.
高脂血症
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A.
what
B.
who
C.
that
D.
when
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A.
stressed
B.
compressed
C.
impressed
D.
distressed
【单选题】— Have you ever visited the Water Cube? — Yes. When I served as a volunteerin Beijing, I it twice. [ ]
A.
have visited
B.
visited
C.
had visited
D.
had been visiting
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【单选题】在定温定压条件下,某反应的 D r G m θ (298K) = 10KJ/mol 。下列说法正确的是 。
A.
该反应一定能自发进行
B.
该反应一定不能自发进行
C.
该反应在非标准条件下，一定不能自发进行
D.
298K, 标准条件下，该反应一定不能自发进行
【单选题】— Have you ever visited the Opera House? —Yes．When I was in Sydney, I ______ it twice．
A.
have visited
B.
had visited
C.
visited
D.
would visit
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